Printing-telegraph system and alphabet.



C. G. ASHLEY.

PRINTING TELEGRAPH SYSTEM AND ALPHABET.

APPLICATION FILED MAY 27, I912- Patented June 1, 1915.

THE NDRRIS PETERS CO4, PHom-LITHQ. wAsHlNGmN. D c,

C. G. ASHLEY.

PRINTING TELEGRAPH SYSTEM AND ALPHABET.

APPLICATION FILED MAY 27. 1912.

1,141,751 Patented June 1, 1915.

2 SHEETS-SHEET 2.

FIG. 5.

I 5 l7 L/IU' LL/|+|FWJ I /IH H UI mTNE5sEs:- INVENTOR,

@ -ZJW Y paw-3% THE NORRIS PETERS C0,. FHOTO-LITHQ, WASHINGmN, D. c

imiran srarnsrarnn'r airmen CHARLES Gr. ASHLEY, OF CHICAGO, ILLINOIS,ASSIG-NOR T0 GENERAL ENGINEERING AND CONSTRUCTION COMPANY, LIMITED, OFTORONTO, ONTARIO, CANADA, A COR- PORATION OF ONTARIO.

PRINTING-TELEGRAPH SYSTEM AND ALPHABET.

To all whom it may con cern Be it known that 1, CHARLES G. ASHLEY, acitizen of the United States of America, and a resident of Chicago,county of Cook, and State of Illinois, have invented a new and usefulImprovement in Printing-Telegraph Systems and Alphabets, of which thefollowing is a specification.

My invention relates to automatic printing' telegraph systems andpertains especially to systems of the class which employ a plurality ofcomponentprinting elements or types, the complete legible charactersbeing formed by impressions in proper relation and sequence from aplurality of the component types representing the various componentparts of the characters to be recorded.

My invention comprises a novel and extremely simple system of apparatusand circuits by means of which I am enabled to utilize for bothapparatus operation and transmission purposes the currents andfrequencies in common use for lighting and power purposes and at thesame time attain a high transmission speed as well as an extremelylegible record. I accomplish these and other desiderata which willsubsequently be disclosed herein, by employing a novel type of motorwhich is operated by a primary current to impart linealmotion to therecording and transmitting tapes, while the imprinting currents aresecondary and of two intensities, their secondary nature making theirrespective instantaneous maximum current values availableforitrans'mission purposes at intervals when the transmitting tapemoving mechanism is substantially stationary, while the two intensitiesof the secondary current allow of utilizing a suificient number ofcomponent types to insure an extremely legible record. Further, by adesign of printing symbol and alphabet, I am enabled for any givenfrequency of current to utilize an extremely short transmitting tape fora given message and totransmit this message at a maximum speed. I thusreduce the mechanism to a maximum of simplicity which makes for lowmaintenance, ease of operation and small cost of manufacture. V

'Hitherto in the art, it has been the practice to employ as an isolatedsource of ourrent for transmission purposes either bat- Specification ofLetters Patent.

Patented June 1, 1915.

Application filed. May 27, 1912. Serial No. 629,870.

teries or motor driven generators and the use of these has increased thecost of the instrument and its bulk and has further added to the cost ofmaintenance and difficulties of adjustment.

In the figures whichaccompany and form a part of this specification andin which like numerals designate corresponding parts throughout Figure 1is a diagrammatic v ew partly in perspective of the transmitting andreceiving apparatus with the conductors connecting them. Fig. 2 is anenlarged plan view of the printing types as they are arranged in theform of a monogram in the receiver. Fig. 3 is a plan View of theprinting mechanism of the receiver. Fig. 4: is a diagrammatic View ofthe tape moving mechanism at the receiving station, together with anelevation of the printing mechanism. Fig. 5 shows a sectionaltransmittingtape perforated to transmit all of the Roman characters andArabic numerals and shows further the appearance of the characters asimprinted on the recording tape.

The transmitter shown at the left in Fig. 1 comprises a transformer 23the primary of which is connected through conductors 26 and 27 with anyconvenient commercial lighting or power circuit, while one terminal ofthe secondary is connected through conductor 24; with ground; a seriesof variant- Voltage taps as 23, 23 23 and 23 are taken from thesecondary, a. relatively high voltage tap 23 being connected to aninsulated brush or plate 14, while a relatively low voltage tap 23* isconnected to the insulated brush or plate 15. A brush 12 bears upon andmakes contact with plate 15 while a brush 18 bears upon and makescontact with both plates 15 and 1 1. Brush 12 is connected to lineconductor 10 while brush 13 is connected to line conductor 11. A drum 16which may be of metallic or non-metallic material, is provided with amedian row of equally spaced projections 16 and is rigidly mounted upona shaft 16 in close proximity with plates 14 and 15 and in such relationthereto that a transmitting tape provided with a median row ofperforations engaging the projections 16 may be drawn by the rotation ofdrum 16 longitudinally between the brushes 12 and 15 and the platenformed by the plates 14 and 15. A

60 allow brush 13 to make contact with either ratchet wheel 17 isrigidly attached to the shaft 16 and rotates therewith and with drum 16.A pair of pawls 18 and 19 are each pivoted at one extremity to theextremities of the bell crank and are retained against the teeth of theratchet wheel 17 by means of the springs 18 and 19 respectively. Thearmature 28 is rigidly attached to the bell crank 20 and the member soformed is pivoted by means of the shaft 7 20 to one pole of thepolarizing magnet 25. The armature 28 is free to swing about its 'pivot20 between the pole faces of the electromagnets 21 and 22 which aremounted rigidly to the remaining pole of the magnet 25. The windings ofthe electromagnets 21 and 22 are connected in series and to the 7 onplate 14 through secondary tap 28 a commercial supply source throughconductors 26 and 27. The magnets 21 and 22 are so wound and connectedthat when energi'zed, unlike magnetic poles are induced on their polefaces, that is their magnetic poles are in rotation. An alternatingprimary current of a definite frequency when energizing magnets 21 and22 therefore causes armature 28 to vibrate in unison therewith, thusrocking the bell crank 20 about pivot 20 and through pawls 18 and 19,ratchet Wheel 17 and shaft 16 imparting rotary motion to drum 16. r

Ratchet wheel 17 is provided with twice as many teeth as there areprojections on the I drum 16, and the ratchet wheel is so placed inangular relation with the. drum 16 that the radial face of every secondtooth is always in the same radial plane'as that occupied by the radialaxis of a projection as 16. Thus given a cycle operating source ofcurrent, armature 28 will make one vipositive and negative potential ofa relatively higher'intensity. As brush 12 bears upon'plate 15 and isconnected to line conductor 10, there is being placed successively uponthat conductor positive and negative potential'of a definite intensity,while as brush 13 bears upon both plates 15 and 14:,

it is possible through a predetermined spac: ing of perforations in atransmitting tape to plate 15 or 1 1 and thereby to place selectivelyupon line conductorslO 'or'll positive or negative potentials of variant'in-- tensities, r

The contact line of the brushes 12 and 13 r with the platen formed byplates 1a and 15 is maintained a distance from the axis of rotation ofdrum l6-which is a multiple of the unit of motion of the transmittingtape.

This unit being defined as that distance through which the tape is movedwhile drum 16 is rotated through one half the angular distance betweenany two consecutive teeth on the ratchet wheel17 or that is whilearmature 28 is making one complete movement in one direction; Thus, asthe secondary current lags substantially 90 be hind the primary currentthe dividing line between any two consecutive tape intervals falls underthe contact line of the brushes with the platen at that instant when thenecessary current of the transformer 23 is at a maximum instantaneousvalues For while armature 28 is making a complete movement inone'direction thus moving drum 16 through one angular, unit, thesecondary current of that particular potential V is building up to amaximum value which is reached at substantially the instant when theprimary current is zero or that is, when the armature 28 and-drum 16faresubstan-V V tially stationary and hence by a. correct transverse andlongitudinal spacing of perforations in a transmittingtape, it ispossible to selectively place over either line conductor to ground apositive or negativeimpulse'of current of a definiteintensity: and uponone line to ground a positive and negative impulse of current of.variant intensity. 7

The correct longitudinal spacing of 'the'perforationsin the tape insuresthat these 'current impulses will be available for transmissionatinstants of the maximum'value of their respectlve potent als.

Referring now especially to Figs. 1, 3 land 7 4, the receiving apparatuscomprises a U j it shaped polarizing magnet 30, one leg of whichextendsa distance beyond the'other and is provided with a series ofalined openings as 1 Figfil. Five operating solenoids 1, 2, 3, 1 anddare positioned within the U shaped magnet with their central openingsin register with the respective openings as 4 in magnet 30 and arerigidly attached thereto of magnet 30 extends slightly inwardlybeyondthe outline of the central openings of each of the solenoids; Aplate, of magnetic material 32 is attached'to thelonger leg of magnet 30and serves tosupport the pole piece 31 which extendsinwardly beyond theto maintain such register. The ishorter leg 7 outline; of thecentralopenings of all of the j solenoids and is maintained at adefinitedistance from the face of the shorter leg of magnet 30 to provide adefinite air'gap' for the polarizing magnet 30. 7 I a One extremity ofeach of a. series of hell crank shaped armatures 1, 2, 8, 4 and 5 passesthrough their respective-apertures in- 4 and 5, is borne as an integralpart thereof upon each extremity of the armatures 1, 2, 3, 4 and 5respectively which lie without the operating helix and these extendedportions of the armatures are bent to bring their respective type facesinto such relation to each other as to form the printing monogram shownin Fig. 3, or as shown greatly enlarged in Fig. 2. The solenoids 3 and 4controlling armatures 3 and 4 and consequently printing the types 3 and4 are connected in series, with their magnetic poles when energized inrotation, and to the line conductor 10 and ground. The solenoidscontrolling armatures 2, 5' and 1 and consequently printing types 2, 5and 1, are connected in' series with the magnetic poles of solenoids 2and 5 in rotation and the magnetic poles of solenoids 5 and 1 inparallel and the group so formed is connected to line conductor 11 andground. Thus an impulse of current over line conductor 10, throughsolenoids 3 and 4 to ground induces unlike poles upon the extremitiesthereof while an impulse of current over line conductor 11 throughsolenoids 2, 5 and 1 to ground induces unlike poles upon the extremitiesof solenoids 2 and 5 and like poles on the extremities of solenoids 5and 1. The solenoids 3, 4, 2 and 5 are wound to operate their respectivearmatures when energized by one predetermined intensity of current,while solenoid 1 is wound to operate its armature only when energized bya current intensity which is substantially 2, 3'

or more times that necessary to operate armatures 3, 4, 2 or 5.

An anvil 34 is placed adjacent to all of the printing types and isadjustable in its distance therefrom. A receiving tape 34 rests on thesurface of the anvil 34 and is drawn longitudinally between the anviland the printing types by means of the roller 35 and idler 50. A stripof impression paper 34 is maintained between the printing types and thereceiving tape 34 and allows of re.- cording the impression of the typeson the recording tape. I

A ratchet wheel 36 which is the exact counterpart of the ratchet wheel17 of the transmitter is rigidly attached to the shaft of the roller 35and rotates therewith and with the roller 35. The mechanism for imtremities of the bell crank 39 and are retained in position against theteeth of the ratchet wheel 36 by means of the springs 37 and 33respectively. An armature 48 is rigidly attached to the bell crank 39and the member thus formed is pivoted by means of the pin 39 to oneextremity of the polarizing magnet 40. The armature 48 is free to moveabout its pivot 39 between the pol faces of a pair of electromagnets 41and 42 which are rigidly attached to the remaining extremity of thepolarizing magnet 40. The electromagnets 41 and 42 are connected inseries with their magnetic poles in rotation and are connected to theleads 46 and 47 of any commercial lighting or power source ofalternating current at the receiving station. A transformer 43 isconnected to the leads 46 and 47 as at the transmitting station, thesecondary of the transformer being connected to the transmittingapparatus at the receiving station which is in all respects similar tothat shown in Fig. 1. Thus assuming that the leads 46 and 47 areconnected to a 60 cycle supply current, the armature 48 will vibrate atthe same rate as the armature 28 at the transmitting station and throughthe pawls 37 and 38, ratchet wheel 36, roller and idler 50, will drawthe receiving tape 34 longitudinally under the printin type faces at thesame or a proportionally lineal rate as that at which the transmittingtape is drawn through the transmitter at the transmitting station,dependent upon the relative diameters of the drums 16 and 35.

The operation of my device is as fol lows: Assuming that the primary ofthe transformer 23 at the transmitting sta tion is connected with a 60cycle source of current and that magnets 21 and 22 are likewiseconnected to this source of current and assuming further that themagnets'41 and 42 at the receiving station are connected with a similarsource of current at the receiving station, then if a perforatedtransmitting tape be provided with a central row of registryperforations and be placed on drum 16 so that these perforationsinvaginate the projections 16, the tape may be drawn between the brushes12 and 13 and the plates 14 and 15 at a uniform rate as hithertoexplained. Now if a recording tape be placed between the roller andidler 50. it will be drawn under the type faces 1 2 3 4 and 5 at thesame or a proportionally lineal rate as that of the transmitting tape ashas hitherto been explained. The lines rate at which the transmittingand receiving tapes move is such that a unit of length of each tapepasses under the contact line of brushes 12 and 13 and under theprinting types respectively, while the respective primary currents aremaking one half cycle. At the transmitting station while the primarycurrent is making one half cycle and the transmitting tape is movinglongitudinally over one unit of length under brushes 12 and 13, thesecondary currents are building up to a maximum instantaneous value ofthe same potential as the primarypotential at that instant and areimpressed on the plates 14 and 15. This maximum instantaneous value ofthe secondary is reached when the transmitting tape has moved un-- derthe contact line of the brushes 12 and 13 with plates 14: and 15 onecomplete tape interval. If now a perforation be placed in thetransmitting tape and be so spaced laterally that it allows contact tobe made between brush 12 and plate 15 at the instant when the tapehasmoved over one tape unit and is at rest, an impulse of current ofmaximum instantaneous value which I will assume occurs at that instantin a current cycle when its potential is positive will be sent from thesecondary of induction coil 23 through tap 23, plate 15, brush 12, lineconductor 10, through operating solenoids 3 and 41 to ground and thenceback to the secondary of transformer 23. Now, as the polarizingma'gnet30 of the receiver normally maintains all of the armatures 1, 2,3, 1 and 5 with their upper extremities against the pole face of itsshorter leg, the pen faces 1, 2, 3, 41 and 5 are normally restrainedfrom contact with the impression paper 34 'Hence a positive impulse ofcurrent through solenoids 3 and 1 will, as they are wound to haveopposite poles when energized, reverse the polarity of one of theirinclosed armatures as 4t from that polarity created therein by thepolarizing magnet 30 and it will be repelled by the hitherto at tractingpole face of the polarizing magnet and urged by the influence ofits-operating solenoid and the opposite pole face 31 to move toward poleface 31, thus causing its printing type t to strike the impression paperand record an impression of pen face 4 upon the receiving tape.

The energization of solenoid 3 vwith a current impulse of positivepotential causes its normal polarity to be accentuated and it is,therefore, more strongly held against the polarizing magnet out ofcontact with the impression paper. Simultaneously through a perforationin the transmitting tape laterally spaced to allow of contact being madebetween brush 12 and plate 15, after the tapehas been moved by the drum16 through the neXt succeeding tape unit, a negative im pulseofcurrentof maximum instantaneous value'may be sent through thesecondarytap23 plate 15, brush'12, line'conductor '10, solenoids 3 andfl, andground to operate Y armature 3 toimprint its type face 3 while type face1 is'more strongly held out of contact with the impression paper. In alike manner, perforations may be spaced laterally in the tape to allowcontact to be made between brush 13 and plate 15, and

may be further so spacedlongitudinallyas to transmit toasolenoids 2, 5and 1 positive or negative impulses of currentfrom secondary tap "23 tooperate "respectively printing types 5, and 2. solenoid 1 is adjusted torequire "substantially three times the current necessary to operatearmatures 2 and 5?, it does not op erate to imprint printing type 1 whenenergized w1th current from secondary tap 23 which operates .armatures3', 4-,- 2 and 5'.

If, however, a perforation 'in the transmitting tape be so laterallyspaced as to allow of contact being made between brush 13 and plate 1iand longitudinally spaced so as to permit a positive impulse ofcurrent,"

However, as

or the same polarity as that which operates tures 5 and 1 tosimultaneously imprint printing types 5 and 1. At the receiving station,the tape'3 l is being drawn l'ongi-T tudinally under the printing typesat a lineal rate which is equal, or'proportional to, the lineal speed ofthe transmittingtape in order that by the operating of the trans"niitter the impressions ofthe types maybe recorded in proper relation topreceding imprints to build uplegible characters Referring now to Fig.2, in which I have 7 shown a plan iew of the printing types, as theyappear in the receiver, or the figure may be looked upon asan enlargedrecord of the imprints of all of the types were they simultaneouslyimprinted upon a stationary receiving surface, type faces 1, 2. and 3are each in width equal to the width of a complete normal character suchas A?. normal character is divided into two 'arb1- trary un1ts of width,and prmtmg types 2 and 3 are separated from types 1, 5 and 4 Printing byone of these arbitrary units. type 1 abuts at one extremity with oneextremity of type with 5 while types l and 5 abut at one extremity eachand are a'lined longitudinally. The drum 36 is of such relative diameterwith drum'16 that while the transmitting tape is moving one longitudinalunit, the receiving tape is moving, or has moved,I dependent upon thephase relation between the operating current at the transmittingstationfand the operating current at the receiving station, a distancewhich is proportionalto thedis tance moved, by thetransmittingtape and:Q

is further} equal to" arbitrary 'uniti' of I width of the pen faces 2and 3 or one half the width of a complete normal character.

Referring now to Fig. 5, which illustrates a section of transmittingtape perforated with all of the perforations necessary to transmit thecharacters of the alphabet and numerals from 0 to 9, and the outline ofthe characters as they appear on the receiving tape, the longitudinalline (34) is an arbitrarily chosen line of contact between brush 12 andplate 15. The longitudinal line 56 is a median line, along which theregistry perforations, which invaginate the projection 16 on drum 16 areplaced. The longitudinal line (25) is an arbitrarily chosen line ofcontact between brush 13 and plate 15 while the longitudinal line (5and 1) is a similarlyrchosen line of contact between brush 13 and plate14. The transverse lines 1+, 2-, 3+ and 4 are spaced a distance apart,which is defined by the angular distance through which the drum 16 ismoved by a complete movement in one direction of armature 28 caused byaone half cycle of the operating current and, as hitherto explained,while the secondary cur-- rent is changing from a maximum of onepotential to a maximum of the opposite potential. l have arbitrarilychosen a ratchet wheel with twice as many teeth as there are projectionson the drum 16 and as the drum is rotated through the angular distanceof one half the distance between any two successive teeth in the ratchetwheel for every half cycle of operating current, there are between anytwo successive registry perforations in the transmitting tape four tapein tervals or instants when the instantaneous maximum value of thesecondary current may be utilized'for transmission purposes, hence,while the tape is moving under the contact line of the brushes 12 and'13with the plates 14 and 15, a distance of four of these tape intervals,there will be impressed on the plates 14 and 15, two cycles of secondarycurrent, which will reach their respective maximum values at instantwhen the dividing line between any two tape in-- tervals is under thecontact line of the brushes 12 and 13 with the plates 14 and 15. Aperforation spaced along the line (34) will allow of contact being madebetween brush 12 and plate 15 to send positive and negative impulsesthrough solenoids 3 and 4 while a perforation spaced along the line willallow of contact being made be tween brush 13 and plate 15 to sendpositive and negative impulses through solenoids and 5. A perforationspaced along line (5 and 1) will allow of contact being made betweenbrush 13 and plate 14 to send positive and negativeimpulses of augmentedintensity through solenoids 2, 5 and 1 to operate armatures 5 and 1simultaneously. The

longitudinal spacing of the perforations along any of the longitudinallines determines the polarity of the impulses as hitherto explained.

The method of building up legible characters is as follows: Assuming thetransmitter and receiver in operation, as hitherto explained, then thetransmitting tape, Fig. 5, is being drawn longitudinally from right toleft between the brushes 12 and 13, and plates 14 and 15, and thereceiving tape 34 is being drawn from right to left under the typefaces, as viewed in Fig. 2. And assuming further that the secondarycurrent reaches a maximum positive value at that instant when therotation of the drum 16 has brought a registry perforation in thetransmitting tape on the contact line of brushes 12 and 13 with plates14 and 15. Then a pair of perforations along the transverse line 1+, oneon the longitudinal line (34) and the other longitudinal line (5 and 1),will allow of contact being made simulta neously between brush 12 andplate 15, and

brush 13 and plate 14 to send a positive impulse of current of arelatively low intensity and maximum instantaneous value over lineconductor lOthrough solenoids 3 and 4 to ground to operate armature 4,and a positive impulse of current of a relatively high intensity andmaximum instantaneous value over line conductor 11 through solenoids 2,5 and 1 to ground to operatesimultaneously armatures 5 and 1, resultingin simultaneously imprinting on the recording tape 84 through the mediumof the impression paper 34 an impression of type faces 4, 5 and 1; afterthe transmitting tape has moved two tape intervals during which time thereceiv' ing tape has moved two units of width of a. complete normalcharacter or the width of a normal character, a pair of perforations inthe transmitting tape along the transverse line 3+ one spacedlongitudinally along line (34) and the other along the line (25), allowof contact being made simultaneously between brush 12 and plate 15, andbrush 13 and plate 15 to simultaneously send over line conductors 10 and11 positive impulses of relatively low intensity and maximuminstantaneous value through solenoids 8, 4, 2, 5 and 1 to operatearmatures 4 and 5 to imprint simultaneously on the receiving tape 34impressions of type faces 4 and 5. These impressions will, as thereceiving tape has moved the width of a complete normal character sincethe last impressions recorded thereon, fall with the upper extremity ofthe impression from type face 4 joining the free extremity of theimpression of type face 1. After the trans mitting tape has moved onemore interval and the receiving tape has moved again one unit of widthof a complete normal character, a perforation in the transmitting tape 7onthe line 4- and longitudinally spaced on the line (25) allow ofcontact being made between brush 13 and plate 15 to send over lineconductor 11 through solenoids 2, 5 and 1a negative impulse of currentof relatively low intensity and of maximum instantaneous value tooperate armature 2 to imprint type face 2. This impression, as thereceivingtape has moved since the last serles .OflDlPIBSSlODS a distanceof one tape 1nto a minimum; that by such reduction I attain, for anygiven frequency of current, a maximum transmission speed; and thatthrough the elimination of bulky and unwieldy batteries and motorgenerators, I have greatly simplified the apparatus and circuits andreduced the cost of manufacture and installation; andhave, atthe sametime,

through this reduction in the number of operating parts-produced aninstrument of v positive operation and one on which the cost ofmaintenance is very low. It will be further observed that as thetransmitting tape passes through the transmitter at a comparatively highrate ofspeed and as the perforations are of small diameter the length ofthe operating impulse, while of sufiicient duration to insure properoperation of the printing types is, in reality, only momentary, thus thenecessity for synchronism between the movement of the transmitter drumand the receiver drum is eliminated for should the two operatingcurrents be at a maximum variation with each other, that is in phasequadrature, and the receiving drum be in motion when the type facesstrike the impression paper, the interval during which the type faceisincontact with the impression paper is of such extremely short durationthat the impression recorded on the receiving tape will not be blurredobjectionably by the tape dragging under the type faces. It should befurther noted that as the transmitter drum is moved through the angulardistance defined as half the distance between the radial faces of anytwo suocessive teeth on the ratchet wheel 17, for each movement in onedirection of the armature 28, the drum and ratchet wheel may be manuallyspun on their axis and allowed to the spirit or narrowing the scope ofmyinvention. v v

Having thus described my invention, what I claim as new and desire tosecure by the United States Letters Patent is as follows:

1. In a printing telegraph system, a source of primary current, meansfor utilizing said current to effect translatory motion, means forderiving a secondary current from said primary current, a plurality ofprinting types, operating magnets. associated therewith, and means forutilizing said translatorymot on jointly w1thsaid secondary current toselectivelyimpress on said operating magnets, current impulses ofvariant p0 larity v 2. In a printing telegraph system, asource ofprimary current, means for inductively deriving a secondary current fromsaidprimary current, said secondary current being displaced in its phaserelation with said: primary current, meansforutilizing said primarycurrent to effect-translatory motion, a plurality of printing devices,operating magnets therefor, and means for utilizing the maximuminstantaneous value of said secondary'currents at instants ofcessationflof said translatory motion, to impressuponselected groups ofsaidoperating magnets current impulses of variant polarity.

8.- In aprinting telegraph system, a source of primary current, atransmitting tape, means for utilizing said current ftoimpart llnealmotion tosa d tape, means for deriving a secondary current from saidprimary. 7

current, a plurality of printing types, oper ating magnets associatedtherewith, and means for utilizing the lineal motion of said tapejointly with said secondary current to impress on said operatingmagnets, current impulses of variant polarity 4C. In a printingtelegraph system, a primary source of alternating-current, means forderiving a secondary *source of current i from said primary source,means for utilizing said primary source of current to effect translatorymotion, means for utilizing said secondary source of current fortransmission purposes, a plurality of printingtypes, operating magnetsassociated with said print ing types and means for utilizing saidtranslatory motion jointly with said secondary current to selectivelyimpress on said operating magnets current impulses of variant polarity.a

5. In a printing telegraph system, a primary source of current, meansfor deriving a secondary source'of current from said primary source,said secondary source being displaced in its phase relation with saidprimary current, a transmitting tape, means for utilizing said primarycurrent to impart lineal motion to said tape, a plurality of printingelements, operating magnets associated therewith, and means forutilizing the maximum instantaneous value of said secondary current atinstants of cessation of the lineal motion of said tape to impress uponsaid operating magnets current impulses of variant polarity.

6. In a printing telegraph system, a source of alternating current, atransformer the primary of which is connected to said source, a ratchetmotor connected to said source, a transmitting tape, means for utilizingsaid motor to impart lineal motion to said tape, a secondary currentderived through the medium of said transformer from said alternating onrent, a plurality of printing types, operating magnets therefor, andmeans for utilizing the motion of said tape and said secondary currentsjointly to impress upon such operating magnets current impulses ofvariant polarity.

7. In a printing telegraph system, a primary source of current, meansfor deriving a secondary source of current from said primary source, atransmitting tape, means for utilizing said primary source of current toimpart longitudinal motion to said tape, a plurality of printingelements, operating electro-magnetsassociated with said printingelements, and means for utilizing the longitudinal motion of said tapejointly with said secondary currents, to selectively impress uponcertain groups of said operating magnets current impulses of variantpolarity and definite intensity and to impress upon other groups of saidelectro-magnets current impulses of definite polarity and variantintensity.

8. In a printing telegraph system, a primary current, a second currentdisplaced in its phase relation thereto, a transmitting tape, means forutilizing said primary current to impart lineal motion to said tape, aplurality of printing elements operating magnets associated therewithand means for utilizing the maximum instantaneous value of said othercurrent at instants of cessation of the lineal motion of said tape toimpress upon certain groups of said operating magnets current impulsesof variant polarity and definite intensity and to impress upon othergroups of said operating magnets current impulses of definite polarityand variant intensity.

9. In a printing telegraph system, a source of alternating current, atransformer the primary of which is connected to said source, a ratchetmotor connected to said source, a transmitting tape, means for utilizingsaid motor to impart lineal motion to said tape, a secondary currentderived through the medium of said transformer from said primary currentand displaced in its phase relation thereto, a plurality of the printingtypes, operating magnets therefor, and means for utilizing the maximuminstantaneous value of said secondary currents at instants of thecessation of the motion of said tape to impress upon said operatingmagnets current impulses of variant polarity and intensity.

10. In a printing telegraph system, a source of alternating current, atransformer the primary of which is connected to said source, a ratchetmotor connected to said source, a transmitting tape, means for utilizingsaid motor to impart lineal motion to said tape, a secondary currentderived through the medium of said transformer from said primary sourceand displaced in its phase relation thereto, a plurality of printingtypes, a polarizing magnet associated with all of said types, anoperating solenoid associated with each of said types, and means forutilizing the maximum instantaneous value of said secondary current atinstants of cessation of motion of said transmitting tape to impressupon certain groups of said operating solenoids current impulses ofvariant polarity and definite intensity and to impress upon other groupsof said operating solenoids current impulses of variant intensity anddefinite polarity.

11. In a printing telegraph system, a transmission line, a transmissiontape, a first source of alternating potentials for moving said tapeintermittently, means for deriving a secondary source of alternatingpotential inductively from said first source for impressing transmissioncurrents on said line and means whereby said tape is moved between themaxima of potentials of said second source.

12. In a printing telegraph system, a transmission line, a transmissiontape, an impulse motor for driving said tape, a series of motor drivingimpulses, a series of intermittent potentials having successive maXimawith intervals therebetween and adapted to be applied to said linethrough the action of said tape, and means for maintaining such a phaserelation between said motor driving impulse and said intermittentpotentials as to allow said motor driving impulse to operate said motorbetween successive maxima of said intermittent potentials.

13. In a printing telegraph system, a line, a first alternatingpotential, a perforated tape, a motor driven by said first alternatingpotential and driving said tape and means for deriving a secondalternating potential from said, first alternating potential, saidsecond alternating potential being governed in its application to saidline by said tape.

14. In a printing telegraph system, a transmission line, a plurality ofprinting types, operating electro magnets associated therewith andconnected to said line, alternating potentials from a first source forimressin currents u on said line and said magnets, a perforatedtransmission tape controlling the application of said alternatingpotentials to saidline and said magnets, alternating potentials from asecond source for moving said tape between the maXima of saidpotentials, and means for deriving said first source of potentials fromsaid second source of potentials.

15. In'a printing telegraph system, a line,

a pluralityof printing types, operating electromagnets associatedtherewith and connected to said line, a series of intermittentpotentials having successive maxima with intervals between, a perforatedtape governingthe application of said potentials to said line and saidmagnets, an impulse motor for driving said perforated tape, and a seriesof motor driving impulses acting in the intervals between the successivemaXima of .the said series for application to theline and means forinductively deriving said series of tively deriving said firstalternating potential from said second alternating potential.

17. In a printing telegraph system, a source of primary current, atransmitting tape, means for utilizing current from said source to shiftsaid tape, means for deriving 'a secondary current inductively from saidsource of primary current, a plurality of printing types, operatingmagnets associated therewith and means for utilizing said tape whenshifted and jointly with current from said secondary source toselectively impress on said operating magnets, current impulses ofvariant polarities.

' 18. In a printing telegraph system, a source of primary current, meansfor inductively deriving a source of secondary current from said prim mycurrent, said secondary current being displaced in its phase relation tosaid primary current, a transmitting tape, means for utilizing currentfrom 'SELlCi primary source to shift said tape intermittently, 'aplurality of printing devices and operating magnets therefor and meansfor utilizing the maximumvalues of currents from said secondary sourceat .instants of cessation to said tape shifting to impress upon selectedgroups ofsaid operating magnets current impulses of variant polarities.

19. In a printing telegraph system, a

source of primary current, a secondary source of current, a transmittingtape, means for utilizing current from said primarysource to" shift saidtape intermittently, aplurality of printing types and operating magnetsassociated therewith, a means for utilizing the shift of said tape bysaid. primary current and jointly with said secondary current toselectively impress on said operating magnets current impulses ofvariant polarities.

20. In a printing telegraph system, a pr1- niary source of current, ,asecondary source of current, means for deriving said currents from a;single source of energy and displacing their phase relations to eachother, a transmitting tape, means for utiliz- 1ng one of said currentstorimpart lineal motion to said tape, a plurality of printing elements,operating magnets associated therewith, andmeansfor utilizing themaximum instantaneous value of the other of said currents at units ofcessation of the lineal motion of said tape to impress'upon saidoperating magnets current impulses of variant polarities. v V 4 V 21. Ina printing telegraph system, aprimary source of current, a secondary;source of current, means for deriving said currents 1 from a singlesource of energy and for dis; placing their phase relat ons toeachother,a transmitting tape, means for utllizing one of said currents to impartlineal motion to V said tape, a plurality of printing elements;

operating magnets associated therewith and means for utilizing themaximum instantaneous value of the other'of said currents at units of,cessation of the lineal motion of said tape to impress operatingcurrents upon said magnets. r V v r 22. In a printing telegraph system,a

source of alternating current, a transformer,

the primary of which. is connected to said source, a ratchet motorconnected to said source, a transmitting tape, means for utilizing thesaid motor to impart lineal mo' t on to said tape,secondary. currentsde-,

rived through the medium of said trans? former from said alternatingcurrent, a plurality ofprinting types, operating magnets therefor, andmeans for utilizing the motion of said-tape and said secondary cur rentsjointly to impress upon said operatingmagnets current impulses ofvariant polarity.

23. A source of primary current, means for deriving a secondary currentfrom the primary current, a series of type operated by the impulses ofthe secondary current, and devices operated by the primary current forcontrolling the impulses of the secondary current.

24. A source of primary current, means for deriving a secondary currentfrom the primary current, a series of type, a corresponding series ofmagnets for operating the type, connections through which the impulsesof the secondary current operate said magnets, and devices operated bythe primary current for selectively controlling the impulses of thesecondary current.

25. A source of primary current, means for producing a secondarycurrent, a series of type, a magnet for each type, connections throughwhich impulses of the secondary current flow through two magnets inseries to operate them individually by impulses of opposite polarity,and devices operated by the primary current for selectively controllingthe impulses of the secondary current.

26. A series of type, a magnet for each type, means for sendingsuccessive impulses to operate said magnets, an intermittently movableimpulse selector, and means for causing the impulses to alternate Withthe movements of the selector.

Signed by me at Toronto, county of York, and Province of Ontario, in thepresence of two Witnesses.

CHARLES G. ASHLEY.

Witnesses:

WM. J. HERDMAN, P. H. Fox.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner 01} Patents, Washington, D. Q,

